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Meet our leadership.

At Plexus, everything we do stems from our core values — customer focus, relationships and teamwork, integrity, open communication and excellence. Our leadership team embodies those values, using them to guide decision making and lead our teams to be the best product realization partner you can find.

Senior Vice President of Global Engineering Solutions and Aftermarket Services

Victor Tan

Senior Vice President of Global Operations

Scott Theune

Regional President - AMER

Todd Kelsey

President and Chief Executive Officer

Todd is our President and Chief Executive Officer. Todd joined Plexus in 1994 as a Design Engineer in our Engineering Solutions group, and progressed within the company during his tenure. Prior to becoming President and Chief Executive Officer in 2016, Todd held the position of Executive Vice President and Chief Operating Officer since 2013.

Todd holds bachelor’s and master’s degrees in electrical engineering from the University of Wisconsin-Madison and a master’s degree in business administration from the University of Wisconsin-Oshkosh.

Steve Frisch

Executive Vice President and Chief Operating Officer

Steve is our Executive Vice President and Chief Operating Officer. Steve joined Plexus in 1990 as a Design Engineer. After holding a number of leadership roles in our engineering organization, he was appointed Senior Vice President of our Engineering Solutions group in 2007. In 2014, he was named Executive Vice President and Chief Customer Officer. He was promoted to his current role in 2016.

Steve holds a bachelor’s degree in electrical engineering and technology from the Milwaukee School of Engineering, a master’s degree in electrical engineering and computer science from Marquette University and a master’s degree in business administration from the University of Wisconsin-Madison.

Patrick Jermain

Executive Vice President and Chief Financial Officer

Patrick is our Executive Vice President and Chief Financial Officer. Patrick joined Plexus in 2010 as Corporate Controller and progressed quickly to our Treasurer and Vice President of Finance. He was promoted to his current role in May 2014. Prior to joining Plexus, Patrick was the Corporate Controller, Assistant Treasurer and Principal Accounting Officer at Appleton Papers Inc., currently known as Appvion, Inc.

Patrick earned a master's degree in business administration from Northwestern University, Kellogg School of Management and a bachelor’s degree in accounting from Wake Forest University.

Angelo is our Executive Vice President, Chief Administrative Officer, General Counsel and Secretary. Angelo joined Plexus in 2002 as Director of Legal Services. In 2006, he was named our General Counsel, Corporate Compliance Officer and Secretary, and was promoted to Chief Administrative Officer in 2013.

Angelo holds a bachelor’s degree in economics from Columbia and juris doctor and master’s in business administration degrees from Fordham University.

Steve Gearhart

Chief Information Officer

Steve joined Plexus in 2010 as our Chief Information Officer. Prior to joining Plexus, Steve held a number of leadership roles within Information Technology and has also held various positions within materials, supply chain, engineering and quality. He has more than 25 years of experience in the manufacturing industry, with 15 years in the electronics manufacturing services industry.

Steve holds a bachelor’s degree in civil engineering from Marquette University and a master’s degree in industrial administration from the Krannert Graduate School of Business at Purdue University.

Heather Beresford

Senior Director - Communications and Investor Relations

Heather Beresford is our Senior Director of Communications and Investor Relations. Heather joined Plexus in 2014 as a Business Development Director within the Aerospace and Defense team, and was promoted to Senior Director of Business Development in 2017. Prior to joining Plexus, Heather held a number of leadership positions at high reliability printed circuit board company, Unicircuit Inc.

Heather earned a bachelor’s degree in Mining Engineering from the Colorado School of Mines.

Ronnie Darroch

Executive Vice President and Regional President - EMEA

Ronnie is our Executive Vice President and Regional President of EMEA. He joined Plexus in 2012 as the Vice President of Operations in the EMEA region, and went on to lead the region as Regional President from 2013 to 2015. In 2015, he was appointed as the Executive Vice President of Global Manufacturing Solutions. He later expanded his role to include oversight of our Americas region as Regional President - AMER. He transitioned into his current position in 2019. Ronnie came to Plexus with more than 27 years of electronics experience in a broad range of executive-level global operational and supply chain roles.

Ronnie holds a higher national diploma in electrical and electronic engineering, as well as a postgraduate certificate in industrial and operations management. In addition, he holds a master’s degree in business administration from the University of the West of Scotland.

Susan Hanson

Vice President of Quality and Regulatory

Susan is our Vice President of Quality and Regulatory. Susan joined Plexus in 2000 and during her tenure has held numerous positions within the company. Her diverse background of experience within Plexus includes holding positions within quality, customer management, marketing, communications and Investor Relations.

Susan holds a bachelor’s degree in marketing and a master’s degree in business administration, with an emphasis in finance, from the University of Wisconsin-Oshkosh.

Andy Hyatt

Senior Vice President - Global Customer Solutions

Andy is the Senior Vice President of our Global Market Development Team. He has over 25 years of EMS industry experience in Operations, Business Development and Account Management, initially joining Plexus in 2002. During his tenure at Plexus he has held several roles on the market sector teams including Market Sector Vice President of both the Healthcare and Life Sciences and Industrial and Commercial teams. Andy was promoted to his current role in 2016.

Andy holds a bachelor's degree in business and economics from George Fox University, and a master's degree in business administration from Portland State University.

Yong Jin “YJ” Lim

Regional President - APAC

YJ is our Regional President of the Asia Pacific region. YJ joined Plexus in 1998 as Managing Director of our Penang facility and progressed through a number of management positions. Prior to joining Plexus, YJ held a number of leadership roles in engineering and operations. He has over 30 years of experience in the electronics industry.

YJ holds a bachelor's degree in mechanical engineering from University Technology of Malaysia.

Kyle McMillan

Vice President - Aftermarket Services

Kyle is our Vice President of Aftermarket Services. He joined Plexus in 2013 in Account Management and transitioned to lead the Aftermarket Services group later the same year. He was promoted to his current role in 2019. Kyle has more than 25 years of experience in the product development, EMS and service industries. Prior to joining Plexus, he ran product and service companies and has an extensive background working in engineering, operations, IT and account management.

Kyle holds a bachelor's degree in electrical and electronic engineering from the University of Strathclyde, Scotland.

Rob Michalkiewicz

Corporate Controller

Rob is our Corporate Controller. Rob joined Plexus in 2015 as Assistant Corporate Controller. He was promoted to his current role in November 2017. Prior to joining Plexus, Rob was the Assistant Corporate Controller at The Manitowoc Company, Inc.

Rob earned a bachelor’s degree in accounting from the University of Wisconsin―Milwaukee as well as a master’s degree in professional accounting and is a certified public accountant.

Oliver Mihm

Executive Vice President - Global Supply Chain

Oliver is our Executive Vice President of Global Supply Chain. He joined Plexus in 2000 as a Design Engineer in our Engineering Solutions group and progressed through a number of leadership roles. He was named Vice President of our Raleigh Design Center in 2008 and became Senior Vice President of Global Engineering Solutions in 2013. In 2014, Oliver expanded his responsibilities to include oversight of the Industrial and Commercial market sector as Market Sector Vice President. He went on to lead our EMEA region as Regional President from 2015 to 2019, after which he transitioned into his current role.

Oliver holds a bachelor's degree in electrical engineering from Pennsylvania State University and a master's degree in business administration with a specialization in international business from Marquette University.

Mike Running

Senior Vice President of Global Engineering Solutions and Aftermarket Services

Mike is our Senior Vice President of Global Engineering Solutions and Aftermarket Services. He joined Plexus in 1999 as a Digital Engineer. After holding a number of engineering leadership positions, Mike was named Vice President of our Boulder Design Center in 2009 and then Vice President of our Neenah Design Center in 2011. In 2014, he was appointed as the Senior Vice President of our Engineering Solutions group. After leading operations of our manufacturing facility in Neenah, Wisconsin from 2017 to 2019, he expanded his current role to include oversight of the Aftermarket Services group.

Mike holds a bachelor’s degree in electrical engineering and computer science from the University of Wisconsin-Madison.

Victor Tan

Senior Vice President of Global Operations

Victor is our Senior Vice President of Global Operations. He joined Plexus in 2007 as the General Manager for our Penang-Hillside location in Malaysia. In 2010, he was promoted to Vice President of Customer Management in APAC. He was appointed to lead all Penang operations and support functions in the region in 2013. He expanded his scope to lead APAC operations in 2018, and was promoted to his current role in 2019. Prior to joining Plexus, Victor held various leadership roles within engineering, operations and site management in the electronic, fabrication (plastic and metal), and automation/equipment assembly industry.

Victor holds a bachelor's degree in materials engineering from the Science University of Malaysia.

Scott Theune

Regional President - AMER

Scott is our Regional President of AMER. Scott joined Plexus in 1993 as an Industrial Engineer. He held a number of leadership roles in our manufacturing organization, including General Manager and Global Director of Manufacturing Process and Technology. In 2005, Scott was appointed Vice President of Supply Chain Operations. He most recently led the Supply Chain organization as Vice President - Global Supply Chain prior to moving into his current role in 2019.

Scott holds a bachelor’s degree in industrial engineering from Marquette University and a master’s certification in global supply chain management from Michigan State University.